Use of quaternaries compound in floating silicate mineral

A technology of salt compounds and silicate minerals, applied in flotation, solid separation, etc., can solve problems in the field of flotation of silicate minerals that have not been seen, and achieve excellent collection capacity, good flotation desilication efficiency, The effect of strong harvesting ability

Active Publication Date: 2009-01-07
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to its unique double-hydrophobic long carbon chain and double-hydrophilic group configuration, it exhibits many unique properties compared with traditional surfactants, and can be used as a

Method used

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  • Use of quaternaries compound in floating silicate mineral
  • Use of quaternaries compound in floating silicate mineral
  • Use of quaternaries compound in floating silicate mineral

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Silicate minerals (kaolinite, illite, pyrophyllite and quartz) with a particle size of -0.074mm were respectively placed in a 50mL flotation cell, 30mL of distilled water was added, stirred for 1min to make it evenly mixed, and the pH The value is 8.0, and the flotation is carried out under the condition that the amount of collector is 150g / t. Table 1 shows the flotation comparison test results of four kinds of double quaternary ammonium salt cationic collectors in the present invention and two commonly used collectors dodecylamine and dodecyltrimethylammonium chloride. It can be seen from the table that the collector ability of diquaternary ammonium compound to kaolinite, illite, pyrophyllite and quartz is obviously stronger than that of two commonly used cationic collectors.

[0025] Table 1 Collector comparison experiment results

[0026]

Embodiment 2

[0027] Example 2: a bauxite ore sample in Henan, the raw ore contains Al 2 o 3 62.63%, SiO 2 10.68%, the ratio of aluminum to silicon is 5.86; the ore is ground to -0.074mm to account for 80%, the concentration of the flotation pulp is 27%, and the pH of the pulp is adjusted to 10 with sodium carbonate; Starch 300g / t, adding collector butyl-α, ω-bis(dimethyl dodecyl ammonium chloride) 200g / t, adding collector 20g / t, can obtain Al 2 o 3 68.51%, SiO 2 6.09% flotation concentrate, the aluminum-silicon ratio of the concentrate reaches 11.36, Al 2 o 3 The recovery rate is 82.48%.

Embodiment 3

[0028] Example 3: A certain magnetite ore in Northeast China is ground to -0.074mm, accounting for 78%, adding water to adjust the slurry to a mass concentration of 25%, adding sodium carbonate to adjust the pH value of the slurry to about 9.0, and then adding dodecylamine and dodecane Base trimethylammonium chloride and the double quaternary ammonium compound compound of the present invention, obtain the result as shown in table 2 through one crude one refined reverse flotation open-circuit test twice.

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Abstract

The invention relates to the field that biquaternary ammonium compounds are applied in silicate mineral flotation, and discloses a collector which applies the biquaternary ammonium compound with the constitutional formula shown as the formula I in bauxite or ironstone reverse flotation desiliconization. In the formula I, R<1> and R<2> are alkyls with 6-18 carbon atoms; R<3>, R<4>, R<5> and R<6> are respectively methyl, ethyl, -(CH2CH2O)nH, or -(CH(CH3)CH2O)nH, wherein, n is equal to 1-6; R<7> is alkylene with 2-6 carbon atoms; and X is Cl, Br or I. The collector of the invention has strong ability to collect quartz, kaolinite, illite and pyrophyllite, and is applicable to the silicate mineral separation from the bauxite or ironstone by reverse flotation, the suitable pH range of the flotation pulp is 5-13, and the dosage is equal to 50-500 g/t according to the content change of the silicate mineral in ores.

Description

[technical field] [0001] The invention relates to a novel silicate mineral flotation collector, in particular to the application of diquaternary ammonium salt compounds in reverse flotation desiliconization of bauxite or iron ore. [Background technique] [0002] In the reverse flotation desiliconization process of iron ore and bauxite, research on new and efficient silicate mineral flotation collectors is a key factor to improve the separation index. Traditional silicate mineral flotation collectors include fatty acid anion collectors and fatty amine cationic collectors. At present, when using fatty acid anionic collectors for iron ore reverse flotation desiliconization, it is necessary to adjust the pH value of the ore pulp to above 11, use calcium ions to activate silicate minerals such as quartz, and use starch, lignosulfonate or Inhibiting iron minerals such as dextrin has the disadvantages of many types of agents, large dosage, and high production costs. Generally, it ...

Claims

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Application Information

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IPC IPC(8): B03D1/01B03D101/02
Inventor 钟宏刘广义夏柳荫
Owner CENT SOUTH UNIV
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